In the past few years, over-the-air computation (AirComp) has emerged as a promising solution for large-scale wireless sensor data fusion in Internet of Things applications [1]}, [2]}, [3]}, [4]}, [5]}, [6]}.
In general, an AirComp system consists of multiple sensors and a receiver to perform data fusion by computing a pre-determined function of the sensors' measurement signals.
Each sensor of the AirComp system sends its pre-processed measurement signal simultaneously to the receiver over a multiple-access channel (MAC). By leveraging the superposition property of MAC and applying a post-processing function to the received sum (superimposed) signal, the receiver obtains the desired function output of the sensors' signals (see e.g. [2]} for details).
